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4ct Cubic Zirconia (Asscher, 7.54×7.54mm, White) vs 4ct Moissanite (Asscher, 9.1×9.1mm, White)


Quick summary: When looked from above (face-up position), 4ct Moissanite (9.1×9.1mm, asscher cut) appears 46% larger than 4ct Cubic Zirconia (7.54×7.54mm, asscher cut). See below how they compare side-by-side on a ring and finger.

4ct Cubic Zirconia (asscher cut)
vs
4ct Moissanite (asscher cut)
white
 
white
7.54×7.54 mm 9.1×9.1 mm
actual size
Actual size of 4ct Cubic Zirconia (asscher cut, 7.54×7.54mm, White color)   Actual size of 4ct Moissanite (asscher cut, 9.1×9.1mm, White color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 4ct Cubic Zirconia (asscher cut, 7.54×7.54mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 4ct Moissanite (asscher cut, 9.1×9.1mm) on a right ring and finger
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
Finger coverage
45% vs 54%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Cubic Zirconia Asscher (7.54×7.54mm, White) and 4ct Moissanite Asscher (9.1×9.1mm, White) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

All things being equal, Cubic Zirconia will face-up smaller than Moissanite for a given carat weight, because it has higher specific gravity (5.65 vs. 3.22 - this means it's "heavier" compared to Moissanite of the same size). Face-up size also depends heavily on the proportions of the cut.

Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.


4 Ct Cubic Zirconia (Asscher) 4 Ct Moissanite (Asscher)
7.54×7.54 mm vs 9.1×9.1 mm
52.3 mm²   76.19 mm²
Face-up size outline for 4ct Moissanite (9.1×9.1mm, asscher cut)
Face-up size outline for 4ct Cubic Zirconia (7.54×7.54mm, asscher cut)
4ct Cubic Zirconia Asscher (7.54×7.54mm)
4ct Moissanite Asscher (9.1×9.1mm)
Difference: 46% (23.89 mm²)
4ct Moissanite (Asscher, 9.1×9.1mm) has approx. 46% more face-up area than 4ct Cubic Zirconia (Asscher, 7.54×7.54mm).


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